 (defn click-el
   "Click on an element having its system id."
   [driver el]
+  {:pre [(some? el)]}
   (execute {:driver driver
             :method :post
             :path   [:session (:session @driver) :element el :click]}))


(defmethod find-element-from* :default
  [driver el locator term]
  (-> (execute {:driver driver
                :method :post
                :path   [:session (:session @driver) :element el :element]


(defmethod find-element-from* :firefox
  [driver el locator term]
  {:pre [(some? el)]}
  (-> (execute {:driver driver
                :method :post
                :path   [:session (:session @driver) :element el :element]
